That was a great question and thanks for asking it. I could have used the answer sooner though. Went wheeling with a group from SCCX yesterday and we came to one hill where I thought 4lo might be appropriate. I had only used 4lo one other time and that was a couple of years ago. Completely forgot about having to push down on the lever. Thanks for bringing this up. I did make it up the hill by the way, with help from the spotters.